Pathophysiological mechanisms of post-myocardial infarction depression: a narrative review

Area of Science:

• Cardiology
• Psychiatry
• Psychosomatic Medicine

Background:

• Myocardial infarction (MI) poses significant physical and mental health challenges.
• Depression is a frequent and serious complication following MI, negatively affecting patient outcomes and survival rates.
• The intricate relationship between MI and depression is often underestimated.

Purpose of the Study:

• To review the potential pathophysiological mechanisms linking depression and MI.
• To examine depression as a potential adverse effect of MI medications.
• To emphasize the importance of early depression detection and management in MI patients.

Main Methods:

• Literature review of studies investigating the connection between myocardial infarction and depression.
• Overview of pathophysiological pathways including neuroendocrine, autonomic, coagulation, inflammatory, environmental, and genetic factors.
• Analysis of depression as an adverse event associated with common MI treatments (beta-blockers, statins, anti-platelet agents).

Main Results:

• Multiple pathophysiological mechanisms, including HPA axis and autonomic nervous system dysregulation, inflammation, and genetic predispositions, may link MI and depression.
• Certain medications used to treat MI, such as beta-blockers, statins, and anti-platelet agents, can potentially induce or worsen depressive symptoms.
• Depression significantly increases mortality risk and reduces quality of life in post-MI patients.

Conclusions:

• The link between myocardial infarction and depression is multifactorial, involving biological, environmental, and iatrogenic factors.
• Early identification and proactive management of depression are critical for improving the prognosis of patients recovering from MI.
• Consistent treatment adherence and regular follow-up are essential for optimizing patient recovery and well-being.